Six Lighting Mistakes on Live Sets and How to Avoid Them

1. Lighting for the first ten minutes only

The most common mistake I see is a lighting plan that looks excellent at the line-up and drifts by the end of a long programme. Lamps warm up, dimmer curves settle, and a set that was balanced at the start no longer matches the cameras an hour in. Crews often judge the look on a monitor in the first few minutes and then stop checking.

A plan built for a long broadcast starts from the opposite end. Run the rig at its working level for a good while before anyone judges the picture, then balance. Note the levels, write them down, and compare the picture again at the half-way point of a rehearsal. If the look moves, you have found the problem on a quiet afternoon rather than on air.

• Warm the rig up before final balancing
• Record dimmer levels, not just the look
• Re-check the picture late in a long rehearsal

2. Treating the presenter as the only subject

A news desk is lit around the presenter, and that is where many plans stop. The guest chair, the walk to the screen wall and the standing position beside the desk are then left to whatever spill happens to fall there. On air, a guest who sits one step outside the lit area looks a stop darker than the host, and the vision mixer is left to rescue it with iris changes.

List every position a person can occupy during the programme, including the awkward ones, and light each of them deliberately. Walk the set with a stand-in at each point while a camera operator watches the monitor. A few minutes of this exposes dark corners that no drawing will show, and it costs far less than reworking the rig after a complaint.

3. Ignoring colour temperature across mixed sources

Sets increasingly mix tungsten, LED panels and daylight from a window or a studio door. Each source is fine alone, but together they produce faces that shift between cool and warm as the presenter turns. Camera white balance can only choose one compromise, and the other sources then show up as tinted edges on skin or a desk surface.

The remedy is dull but reliable: decide on one colour temperature for the set and hold every source to it. Flag or cover any daylight, and use gels or panel settings to bring older fittings in line. Where mixing cannot be avoided, keep the odd source on the background rather than the faces, so any difference reads as set design instead of a colour error.

• Pick one target colour temperature
• Block or cover stray daylight
• Keep mismatched sources off faces

4. Forgetting what the lights do to sound and heat

Lighting decisions leak into other departments. Cheap dimmers can hum into nearby microphones, fan noise from panels reaches a boom position, and a bank of lamps over a small desk can make a guest visibly uncomfortable within half an hour. Perspiration, squinting and a shiny forehead are all lighting problems that arrive through the picture.

Test with the audio team present, not afterwards. Listen at the microphone positions with the rig at full working level, and move any noisy fitting rather than hoping for a fix in the mix. For heat, check the desk and guest positions after a sustained run and raise the lamp height or reduce output there. Comfortable people look calmer on camera, which no grading can imitate.

5. No written plan for the person who comes after you

Live sets are rarely lit and run by the same person. A rig that works on the day of the lighting designer's visit is often adjusted by a well-meaning crew member a fortnight later, and nobody can say what the original state was. The picture slowly decays, and each fix applies to a baseline that no one remembers.

A single page is enough: a plan view with fitting positions, labelled channels, the dimmer levels for each preset, and a photograph of the finished look from the main camera. Keep a copy at the desk and one with the studio manager. When something changes on purpose, update the page; when it changes by accident, the page tells you exactly how to return.

• Plan view with channel labels
• Preset levels written next to each channel
• Reference frame from the main camera

6. Leaving the fallback until something fails

Few teams ask what the set looks like when a key lamp fails ten minutes into a programme. If the plan depends on a single front source for the host, one blown lamp leaves a dark face with no quick answer. Panic adjustments mid-programme usually make the shot worse.

Build in a simple fallback: a second source covering each key position at a lower level, a preset that brings it up, and a person who knows which button to press. Practise the switch once in rehearsal. It adds little to the rig, and a failure then reads on air as a small change in the picture rather than an interruption.